The Missile Knows Where It Is.

I'm gonna go insane... The Missile Knows Where It Is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from the position where it is to a position where it wasn't, it now is. Consequently, The position where it is, is now the position where it wasn't and follows the position where it wasn't and it follows that the position that is was, is now the position that it isn't. ungy and eepy